construct button place panel button group param labeltext actioncommand list arrai contain pair string text button local valu actioncommand permit set action logic recogn button param set action action regist button execut button press set button list labeltext actioncommand action set action enumer en button group element en element button button button en element button group remov button remov add invis button us button group add radio button kei label labeltext actioncommand radio button button radio button kei label button add action listen set action action command kei label button set action command action command button set font look feel mgr instanc standard font button group add button add button 